Index: chapter.xml
===================================================================
--- chapter.xml
+++ chapter.xml
@@ -1320,18 +1320,23 @@
       requires a computer with a newer processor that supports &intel;
       Extended Page Tables (<acronym>EPT</acronym>) or &amd; Rapid
       Virtualization Indexing (<acronym>RVI</acronym>), also known as
-      Nested Page Tables (<acronym>NPT</acronym>).  Most newer
-      processors, specifically the &intel;&nbsp;&core; i3/i5/i7 and
-      &intel;&nbsp;&xeon; E3/E5/E7, support this feature.  For a
-      complete list of &intel; processors that support
-      <acronym>EPT</acronym>, refer to <link
-      xlink:href="http://ark.intel.com/search/advanced?s=t&amp;ExtendedPageTables=true">http://ark.intel.com/search/advanced?s=t&amp;ExtendedPageTables=true</link>.
-      <acronym>RVI</acronym> is found on the 3rd  generation and later
-      of the &amd.opteron; (Barcelona) processors.  The easiest way to
-      check for support of <acronym>EPT</acronym> or
-      <acronym>RVI</acronym> is to look for the
-      <literal>POPCNT</literal> processor feature flag on the
-      <literal>Features2</literal> line in <command>dmesg</command> or
+      Nested Page Tables (<acronym>NPT</acronym>).  In addition, to
+      host &linux; guests, or &os; guests with more than one vCPU,
+      VMX unrestricted mode support (<acronym>UG</acronym>) is also
+      required.  Most newer processors, specifically the &intel;&nbsp;
+      &core; i3/i5/i7 and &intel;&nbsp;&xeon; E3/E5/E7 support these
+      features.  <acronym>UG</acronym> support was introduced with
+      Intel's Westmere micro-architecture.  For a complete list of
+      &intel; processors that support <acronym>EPT</acronym>, refer to
+      <link xlink:href="http://ark.intel.com/search/advanced?s=t&amp;ExtendedPageTables=true">http://ark.intel.com/search/advanced?s=t&amp;ExtendedPageTables=true</link>.
+      <acronym>RVI</acronym> is found on the third generation and
+      later of the &amd.opteron; (Barcelona) processors.  The easiest
+      way to check for support of <acronym>EPT</acronym>,
+      <acronym>RVI</acronym>, or <acronym>UG</acronym> is to look for
+      the <literal>POPCNT</literal> processor feature flag on the
+      <literal>Features2</literal> line and <literal>EPT</literal> and
+      <literal>UG</literal> on the <literal>VT-x</literal> line in
+      <command>dmesg</command> or
       <filename>/var/run/dmesg.boot</filename>.</para>
 
     <sect2 xml:id="virtualization-bhyve-prep">
@@ -1506,6 +1511,23 @@
       <screen>&prompt.root; <userinput>bhyvectl --destroy --vm=<replaceable>linuxguest</replaceable></userinput></screen>
     </sect2>
 
+    <sect2 xml:id="virtualization-bhyve-zfs">
+      <title>Using ZFS with Bhyve Guests</title>
+
+      <para>If the host machine is running on ZFS, using ZFS volumes
+	instead of disk image files may provide significant
+	performance benefits for the guest VMs.  A ZFS volume
+	can be created by:</para>
+
+      <screen>&prompt.root; <userinput>zfs create -V16G -o volmode=dev zroot/vdisk0</userinput> </screen>
+
+      <para>Once created, the ZFS volume can be specified as the disk
+	drive when starting the guest vm using bhyve:</para>
+
+<screen>&prompt.root; <userinput>bhyve -AI -H -P -s 0:0,hostbridge -s 1:0,lpc -s 2:0,virtio-net,tap1 -s3:0,ahci-hd,/dev/zvol/zroot/vdisk0 \ -l com1,stdio -c <replaceable>4</replaceable> -m <replaceable>1024M</replaceable> <replaceable>linuxguest</replaceable></userinput></screen>
+    </sect2>
+
+
     <sect2 xml:id="virtualization-bhyve-nmdm">
       <title>Virtual Machine Consoles</title>
 
@@ -1526,6 +1548,10 @@
 	<filename>/dev/nmdm1B</filename>).  See &man.nmdm.4; for more
 	information.</para>
 
+    <para>The example below shows how to boot the &linux; guest
+      created above with the console redirected to the null modem.
+      &os; guests can be configured similarly.</para>
+
       <screen>&prompt.root; <userinput>kldload nmdm</userinput>
 &prompt.root; <userinput>bhyve -AI -H -P -s 0:0,hostbridge -s 1:0,lpc -s 2:0,virtio-net,tap1 -s 3:0,virtio-blk,./linux.img \
 -l com1,<replaceable>/dev/nmdm0A</replaceable> -c <replaceable>4</replaceable> -m <replaceable>1024M</replaceable> <replaceable>linuxguest</replaceable></userinput>